User Guide

OmniAccess SafeGuard OS Administration Guide
126
Chapter 4: Configuring SafeGuard Controllers
Configuring VLANs on the SafeGuard Controller
A VLAN is a logical grouping of endpoint devices on different physical LAN segments
that communicate as if they are on the same physical LAN segment. These endpoint
devices are referred to as members of the VLAN. Unlike a LAN connected using hardware,
a VLAN is configured using the SafeGuard OS CLI, making it a virtual connection.
VLANs are part of the IEEE 802.1Q standard, which is designed to address how to break
large networks into smaller parts so broadcast and multicast traffic would not grab more
bandwidth than necessary. The standard also helps provide a higher level of security
between segments of internal networks.
On SafeGuard Controllers, VLANs do not need to be created; they are pre-configured
already. However, some of the VLAN settings are adjustable. Controllers classify all
untagged traffic upon ingress into the Controller and into the reserved VLAN. The
reserved VLAN is always enabled. The reserved VLAN is set to a VLAN ID of 1 by
default.
To set the VLAN ID for the reserved VLAN, use the reserved vlan command in Global
Configuration mode.
reserved vlan vlanid
The following example assigns a VLAN ID of 50 to a Controller;
(SafeGuardOS) #configure terminal
(SafeGuardOS) (config) #reserved vlan 50
(SafeGuardOS) (config) #
To validate the assignment of the VLAN ID, use the show reserved vlan or the show
running-config commands. An example of the show running-config is shown in Sample
Output on page 395. The syntax of the show reserved vlan command is:
show reserved vlan
The Privileged Exec command has no options or parameters. The following example is
representative of the output from the command.
(SafeGuardOS) #show reserved vlan
The untagged Vlan id = 50
(SafeGuardOS) #
For more details on SafeGuard Controllers and their features, see Alcatel-Lucent Solution
and Product Overview on page 20.
Syntax Description vlanid Specifies a VLAN ID number. Valid entries are 1
to 4094.